Hydraulic cylinders have a variety of structural forms, and there are many ways to categorize them as follows: According to the movement can be divided into linear reciprocating motion and rotary swing type. According to the hydraulic pressure can be divided into single-acting type, double-acting type. According to the structural form can be divided into piston, piston, multi-stage retractable sleeve, rack and pinion. According to the installation can be divided into tie rods, lugs, feet, hinged shafts. According to the pressure can be divided into 16Mpa, 25Mpa, 31.5Mpa and so on.
